Radon: We Track That!

CDC’s Tracking Network connects people with vital information on a variety of health and environmental topics. You can use data and information collected about radon to help determine individual and community risk for radon and inform community interventions.

Reduce Your Risk for Radon Exposure

In the United States, radon is the #2 cause of lung cancer after smoking and is estimated to cause over 20,000 deaths each year, according the U.S. Environmental Protection Agency.

Radon is a naturally occurring gas in rocks, soil, and groundwater that you cannot see, smell, or taste.

You can be exposed to radon primarily from breathing in radon that has comes in through cracks and gaps in buildings and homes.

Any home can have a radon problem. Testing is the only way to know if radon levels are high in your home. If radon levels in your home are above 4 picocuries per liter (pCi/L), the EPA recommends taking action [413 KB] to reduce your exposure.